Riparian Buffer Assessment

In early 2010, the riparian buffers in the upper Granite Creek Watershed were assessed to determine their effectiveness in slowing and filtering pollutants from surface runoff. Data on botanical and physical characteristics of the riparian buffers were collected in urban and forested reaches of Granite Creek and its tributaries. Nearly 400 transects were collected in total (see map of transect locations below).

The data was analyzed to classify the transects by vegetated cover, nutrient uptake potential, surface roughness, and slope of buffer. This data will be used in conjunction with the water quality and field survey data to help us identify opportunities to improve the riparian buffer through enhancement or restoration. A summary of the survey methods, analysis, and conclusions is available in the preliminary.

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